Improvement in reflectors



w. H. CRAWFORD.

Refiector.-

No. 36,205. Patented Aug. 19, 1862.

zfnes s:

l'nveni on' UNITED STATES PATENT OFFICE.

H. CRAWFORD, on NEW YORK, N. Y.

IMPROVEMENT IN REFLECTORS Specification forming part of Letters Patent No. 36,205, dated August 19, 186.2.

To aZZ whom it may concern:

Be it known that I, W. H. CRAWFORD, of the city, county, and State of New York, have invented a new and Improved Reflector for Gas- Lights, 850.; and I do hereby declare that the following is afnll, clear, and exact description of the same, reference being had to the accompanying drawings, forming a partof this specification, in which- Figure 1 represents a vertical central section of my invention, taken in the plane indicated by the line x m, Fig. 2. Fig. 2 is a plan or top view of the same.

Similar letters of reference in both views indicate corresponding parts.

This invention consists in a reflector having one high central ridge opposite the flame, and formed by placing two curved or bent surfaces together in such a manner that said central ridge is produced and that the rays of light from the flame are spread by the action of the reflector over a large area.

To enable those skilled in the art to make and use my invention I will proceed to describe its construction and operation with reference to the drawings.

The reflector A is made of two plates or parts, B C, which are curved, as shown in Fig. 2, or which may be bent in some other suitable manner. These two plates are. placed together so that they form a high ridge, D, in the center of the reflector. The edge of this ridge may be slightly rounded, as shown in Fig. 2 of the drawings, or it may be a sharp corner when it is considered of advantage.

It is obvious that in practice the whole reflector will be made out of one plate, which is curved and bent in the manner hereinbef'ore described; but this plate will have two distinct reflecting-surfaces, B O, which unite in the central ridge, D.

E are looped wire rods, which are soldered or otherwise secured to the back ofthe reflector, so as to strengthen the plates B O and to keep them in propershape. The loops a in the F, as clearly shown in the drawings, and ifv the gas or lamp is lighted the raysof light from the flame are spread over a semicircle described from the burner, the light being divided in such a manner that all objects situated within said semicircle at equal distances from the flame are illuminated with-equal intensity. v

By having two flames and two reflectors facing in opposite directions a complete circular reflector is obtained.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is l A reflector, A, formed oftwo curved or bent surfaces, B O, with one high central ridge, D, as and for the purpose shown and described. XV. H. CRAWFORD. Vitnesses:

R. GAWLEY, JAMES LAIRD. 

